fpr shim screw
Posting Guru
Joined: Aug 2007
Posts: 1,852
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From: Sonoita Hills, AZ
You should already be at 60-65 psi, shim should bring it up to 68-75 depending on condition of fuel pump. Get several small screws so your ready when you take it apart. I think mine is 4-40 if not its 2-56.
Elder User
Joined: Apr 2005
Posts: 690
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From: Greenwood, SC
you can always do the bb. i used a daisy bb and took my fuel pressure up to about 90. it drops to about 60at WOT. those are conservative numbers also. it may be as high as 100 and drop to as low as 70. i had trouble finding the shim kits so i just went with the bb. been running it since before christmas and it seems to be holding up fine.
Posting Guru
Joined: Aug 2005
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From: Central Alabama
You know the light switch plates that you have all through the house? Use the little mount screw that holds the plate, I've heard (read) that it should work perfectly.
Remember, how much shim you need depends on the condition of your fuel pump. Your shooting for 65-72psi. Good Luck.
Remember, how much shim you need depends on the condition of your fuel pump. Your shooting for 65-72psi. Good Luck.
Elder User
Joined: Apr 2005
Posts: 690
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From: Greenwood, SC
all are good on pattys excursion, it drives great. my fuel bowl lid on my truck did crack today though shooting fuel like a guyser into the atmosphere after soaking the engine. luckily i do carry a spare cap in the truck box though as i have heard of them cracking or splitting before. it was messy though and to change it in a coat and tie without getting dirty b/c i had to be at a meeting in 10 minutes was a bit tricky too!! but i had rags as well and things are back to running well now. i really need to do a fuel bowl delete though.
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Elder User
Joined: Apr 2005
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From: Greenwood, SC
drain valve o-rings are good to go, but if they do give out i have a whole bag of viton o-rings that i can throw in there as well!!
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Post Fiend
Joined: Feb 2006
Posts: 11,892
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From: Middle Tennessee
Originally Posted by rugermack
You should already be at 60-65 psi, shim should bring it up to 68-75 depending on condition of fuel pump.
Senior User
Joined: Jan 2008
Posts: 207
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From: South Carolina
Grant has had one on his that i made to check PSI after we did C C mod his numbers are on because we used 2 gauges to be sure and his #s are with stock fuel pump. Truck run like rocket on dp tunes.
